Question about Nutch plugins

["Rastko.pavlovic" <ra...@protonmail.com.INVALID>]

Hi all,

I've been trying to implement this tutorial https://cwiki.apache.org/confluence/display/nutch/WritingPluginExample on Nutch 1.17. In several places, the tutorial refers to $NUTCH_HOME/src/plugin. However, in my $NUTCH_HOME I only have a "plugin" directory and no src. If I try building the plugin in a sub directory of the "plugin" directory with ant, I get a problem where build.xml complains that it can't find build-plugin.xml.

Does anyone maybe know what am I doing wrong (in case it helps, I use nutch by just unzipping apache-nutch-1.17-bin.tar.gz)?

Many thanks in advance.

Best regards,
Rastko

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Re: Question about Nutch plugins

[Sebastian Nagel <wa...@googlemail.com.INVALID>]

Hi Rastko,

the description isn't really correct now as NUTCH_HOME is supposed to point to
the runtime

- if the binary package is used: this is the base folder of the package,
  eg. apache-nutch-1.18/

- if Nutch is built from the source, you usually point NUTCH_HOME to
  runtime/local/ - the directory tree below this folder looks pretty much
  the same as the binary package

Older versions of Nutch hadn't this separation of source and runtime.


> I use nutch by just unzipping apache-nutch-1.17-bin.tar.gz)?

If you want to build your own plugin, I'd recommend to start using
the Nutch source package, or even the current master by cloning the
Nutch git repository.


As always for a community project: feel free to improve the tutorial, obviously
it might be out of date.


Best,
Sebastian


On 7/23/22 13:28, Rastko.pavlovic wrote:
> Hi all,
> 
> I've been trying to implement this tutorial https://cwiki.apache.org/confluence/display/nutch/WritingPluginExample on Nutch 1.17. In several places, the tutorial refers to $NUTCH_HOME/src/plugin. However, in my $NUTCH_HOME I only have a "plugin" directory and no src. If I try building the plugin in a sub directory of the "plugin" directory with ant, I get a problem where build.xml complains that it can't find build-plugin.xml.
> 
> Does anyone maybe know what am I doing wrong (in case it helps, I use nutch by just unzipping apache-nutch-1.17-bin.tar.gz)?
> 
> Many thanks in advance.
> 
> Best regards,
> Rastko
>